Skip to main content

Table 4 Comparison of thyroid hormones between our study from Sudan and previous reports from other countries

From: Trimester-specific thyroid hormone reference ranges in Sudanese women

  Percentile used TFT Non-pregnant Trimester I Trimester II Trimester III
Sudan 5–95 TSH, IU/ml 0.78–4.55 0.08–2.18 0.54–2.52 0.59–2.46
T3, nmol/L 4.16–6.10 3.84–6.56 3.43–5.45 3.18–5.16
T4, pmol/L 12.6–20.0 13.00–31.53 11.07–31.2 9.78–23.81
Nigeria [20] 5–95 TSH, IU/ml 0.5–5.0 0.5–5.0 0.5–5.0
T3, nmol/L 1.7–3.5 1.86–3.54 1.9–3.94
T4, pmol/L 6.1–19.7 8.5–23.3 8.9–23.3
UAE [5] 2.5–97.5 TSH, IU/ml 0.21–6.9 0.17–5.9 0.04–9.3 0.3–4.32
T3, nmol/L
T4, pmol/L 8–18 8.4–19.3 8.9–24.6 9.8–18.6
Iran [6] 5–95 TSH, IU/ml 0.2–3.9 0.5–4.1 0.6–4.1
T3, nmol/L
T4, pmol/L 8.5–19 9.7–21 8.7–20.4.
Turkey [9] 2.5–97.5 TSH, IU/ml 0.47–4.70 0.49–2.33 0.51–3.44 0.58–4.31
T3, nmol/L 2.96–5.48 3.80–5.81 3.69–5.90 3.67–5.81
T4, pmol/L 10.68–18.23 10.30–18.11 10.30–18.15 10.30–17.89
Switzerland [3] 2.5–97.5 TSH, IU/ml 0.35–4.94 0.06–2.83 0.20–2.79 0.31–2.90
T3, nmol/L 3.52–6.22 3.41–5.78 3.33–5.59
T4, pmol/L 9–19.1 10.5–18.3 9.5–15.7 8.6–13.6
Spain [10] 2.5–97.5 TSH, IU/ml 0.10–2.65 0.12–2.64 0.23–3.56
T3, nmol/L 3.44–6.80 3.79–6.42 3.46–6.39
T4, pmol/L 10.61–17.76 9.1–14.67 8.49–15.6
India [7] 5–95 TSH, IU/ml 0.6–5.0 0.43–5.78 0.74–5.7
T3, nmol/L 1.92–5.86 3.2–5.7 3.3–5.18
T4, pmol/L 12.0–19.45 9.48–19.58 11.3–17.71
China [8] 2.5–97.5 TSH, IU/ml 0.54–4.20 0.16–3.78 0.34–3.51 0.34–4.32
T3, nmol/L 2.9–5.0 2.9–4.6 2.9–4.5
T4, pmol/L 9.2–16.9 10.9–17.7 9.3–15.2 7.9–14.1
USA [4] 2.5–97.5 TSH, IU/ml 0.24–2.99 0.46–2.95 0.43–2.78
T3, nmol/L
T4, pmol/L